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HP-67 1805S02334
03-20-2021, 11:08 PM (This post was last modified: 03-20-2021 11:18 PM by albertofenini.)
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HP-67 1805S02334
The Keyboard

Hi everyone
after a few SR-52s and some TI-59s we are now back working on an HP-67
This one had a broken battery contact but it was shown working so it was a go
Once opened however the oxidation was worst than we thought

Basically the key domes were all broken and few traces on the back corroded
The 50% water and 50% vinegar did his job, than from a non working keyboard
we recovered the metallic strips and soldered them rebuilding the keyboard.

Almost all of the keys have the classic click except the h and the enter
will see if we can do something about that but at least is now working

By doing so the pcb has become a little curved and while this is not a problem for the
keys, once screwed to case everything was fine, it may be an issue for the card reader ...
The card reader chassis was also quite damaged so it will be challenging ...
Any idea or suggestion is welcome
Take care !

Pictures here : HP-67 1805S02334

Edoardo & Alberto
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HP-67 1805S02334 - albertofenini - 03-20-2021 11:08 PM
RE: HP-67 1805S02334 - teenix - 03-21-2021, 01:38 AM
RE: HP-67 1805S02334 - albertofenini - 03-21-2021, 09:42 PM

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